Example sentences

• 你多久没看到他了？

  nǐ duōjiǔ méi kàndào tā le?

  How long haven't you seen him?

• 昨天我在公园里看到他在打球。

  zuótiān wǒ zài gōngyuán lǐ kàndào tā zài dǎqiú.

  I saw him playing ball in the park yesterday